Concorde (DC Designs) problem with Flap Alarm Sound and Checklist?

When using Flaps (Nose) an annoying and unstoppable sound starts. And when i try to solve the situtation using “Auto Completion” it hangs always at first check point no matter which one i choose. e.g. “Parking Brake” OFF will durate endless. And the sound is still there! I restarted several times and i dont know how to avoid this sound and go on with the check list.

The check list itself also has some failures like e.g. it will not show where the “LP Bleed Valves”.

When i use “Auto Completion” flaps wont be set and the engines wont start. “Auto Completion” seems not to work at all compared to other airplanes. With “Auto Completion” even the radio is still turned off.
After you try “Auto Completion” only once you cannot reset the list and check every point one by one. Then its says “Copilot processing…” forever!

I am 100% clueless and if i cannot solve these problems i have to refund the airplane.

I know this is from March so no idea if you’ll see this, but maybe it will help someone else too. I ran into this same issue regarding the warning sound - when the throttles are at idle (or low power), it will sound if the nose or visor have been dropped. Only drop it when about ready for takeoff. Took a lot of experimenting to figure out what was happening. Once the throttles are advanced a little, the warning tone shuts off.

The LP bleed valves are under the red covers on the engine management panel, next to the crossfeed valve controls. The engine start process is relatively straightforward once you can find the switches. Electrics on, engine bleed on, LP bleeds on (uncover, flip up), crossfeed valves opened, start engines 3, 2, 1, 4.